Sofa



FIG. 1 is a front elevational view of a sofa according to an embodiment of the invention.

FIG. 2 is a back elevational view of the sofa according to an embodiment of the invention.

FIG. 3 is a side elevational view of the sofa according to an embodiment of the invention, the opposite side is a mirror image thereof.

FIG. 4 is a top plan view of a sofa according to an embodiment of the invention; and,

FIG. 5 is a perspective view of the sofa according to an embodiment of the invention.

The dashed lines in the drawings illustrate environmental structure only and form no part of the claimed design. 

We claim the ornamental design for sofa, as shown and described. 